Weather in Naples in August

A good month. August works. It is not the peak, but nothing about it fights you. Highs average 33.3 °C, lows 22.2 °C, and rain falls on 5 days — nothing in the month is working against you.

August ranks 9 of 12 in Naples: past the worst of the year but short of May, which is the month to book if the dates are open.

Rain falls on only 5 days, so an itinerary with no wet-weather fallback is a reasonable risk. Pack for 33.3 °C days and 22.2 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: 9 days clear 35 °C, so a serious heatwave is normal rather than notable. Across the twenty years measured, the hottest August day reached 42.3 °C and the coldest night fell to 16 °C.

This is the volatile part. August rainfall has ranged from 3 mm to 75 mm across the twenty years measured — a 72 mm spread around an average of 24 mm. The average is real but almost no individual August looks like it, so treat the figure as the middle of a wide range rather than a forecast.

Wind is light at 6.3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 58%.

How August sits in the year

Temperatures hold steady either side: 33 °C in July, 33.3 here, 28 in September. Nothing about the timing within the month matters much. Rain is the thing that moves: September brings 5 days more of it, so the earlier half of a flexible trip is the safer half.

Daylight in August

13.9 hours of daylight, losing 1.2 hours across the month. That is between Naples's extremes of 15.1 and 9.3 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 26.7 °C in August — warm enough to stay in as long as you like. This is the warmest the water gets all year.

How busy it gets

Shoulder. The value months — prices ease off and you get the place closer to itself.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

August in Naples versus nearby

If Naples is one option among several, the nearby comparison is worth making. Positano is a better bet in August — 6.5 °C cooler, the same number of rain days. Rome is close enough to be a coin toss — within a degree on temperature, 1 day less rain.

So: August is a compromise. May is 20 points better and is what Naples is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Naples

See all twelve months in Naples, or where else to go in August.